linux-kernel - [PATCH v2 19/20] verification/rvgen: Add support for per-obj monitors

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Message-ID: <20250919140954.104920-20-gmonaco@redhat.com>
Date: Fri, 19 Sep 2025 16:09:53 +0200
From: Gabriele Monaco <gmonaco@...hat.com>
To: linux-kernel@...r.kernel.org,
	Steven Rostedt <rostedt@...dmis.org>,
	linux-trace-kernel@...r.kernel.org
Cc: Gabriele Monaco <gmonaco@...hat.com>,
	Nam Cao <namcao@...utronix.de>,
	Tomas Glozar <tglozar@...hat.com>,
	Juri Lelli <jlelli@...hat.com>,
	Clark Williams <williams@...hat.com>,
	John Kacur <jkacur@...hat.com>
Subject: [PATCH v2 19/20] verification/rvgen: Add support for per-obj monitors

The special per-object monitor type was just introduced in RV, this
requires the user to define some functions and type specific to the
object.

Adapt rvgen to add stub definitions for the monitor_target type, the
da_get_id() function and other modifications required to create
per-object monitors.

Signed-off-by: Gabriele Monaco <gmonaco@...hat.com>
---
 tools/verification/rvgen/rvgen/dot2k.py     | 6 ++++++
 tools/verification/rvgen/rvgen/generator.py | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/tools/verification/rvgen/rvgen/dot2k.py b/tools/verification/rvgen/rvgen/dot2k.py
index 627efaec3a59..fe05bdc09861 100644
--- a/tools/verification/rvgen/rvgen/dot2k.py
+++ b/tools/verification/rvgen/rvgen/dot2k.py
@@ -27,6 +27,8 @@ class dot2k(Monitor, Dot2c):
     def fill_monitor_type(self) -> str:
         buff = [ self.monitor_type.upper() ]
         buff += self._fill_timer_type()
+        if self.monitor_type == "per_obj":
+            buff.append("typedef /* XXX: define the target type */ *monitor_target;")
         return "\n".join(buff)
 
     def fill_tracepoint_handlers_skel(self) -> str:
@@ -45,6 +47,10 @@ class dot2k(Monitor, Dot2c):
             if self.monitor_type == "per_task":
                 buff.append("\tstruct task_struct *p = /* XXX: how do I get p? */;");
                 buff.append("\tda_%s(p, %s%s);" % (handle, event, self.enum_suffix));
+            elif self.monitor_type == "per_obj":
+                buff.append("\tint id = /* XXX: how do I get the id? */;");
+                buff.append("\tmonitor_target t = /* XXX: how do I get t? */;");
+                buff.append("\tda_%s(id, t, %s%s);" % (handle, event, self.enum_suffix));
             else:
                 buff.append("\tda_%s(%s%s);" % (handle, event, self.enum_suffix));
             buff.append("}")
diff --git a/tools/verification/rvgen/rvgen/generator.py b/tools/verification/rvgen/rvgen/generator.py
index b80af3fd6701..5eac12e110dc 100644
--- a/tools/verification/rvgen/rvgen/generator.py
+++ b/tools/verification/rvgen/rvgen/generator.py
@@ -243,7 +243,7 @@ obj-$(CONFIG_RV_MON_%s) += monitors/%s/%s.o
 
 
 class Monitor(RVGenerator):
-    monitor_types = { "global" : 1, "per_cpu" : 2, "per_task" : 3 }
+    monitor_types = { "global" : 1, "per_cpu" : 2, "per_task" : 3, "per_obj" : 4 }
 
     def __init__(self, extra_params={}):
         super().__init__(extra_params)
-- 
2.51.0